Improved hot-blast apparatus for puddling and other furnaces



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P. HOOP, JR., AND R. HOOP, BERLN CROSSlOADS,

Latas Para: No. 83,382, daad caoba 27, 186s.`

IMPRovnn Hor-BLAST APPARATUS FOR PUDDLING AND OTHER rURNACES. "E

The Schedule referred to in these Letters Patent and making part` of the same.

To all whom 'it may concern:

Be it known that we,P. Hoor, Jr., and R. Hoor, of Berlin Gross-Roads, in the county of Jackson, and Stateof Ohio, have invented a new and useful Improvement in Hot-Blast Furnaces; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is a vertical section through a chimney containing our apparatus, thetwo lower rings and the lower connecting-pipe being also in section. Y

Figure Zis a horizontal section through the line a: a; of iig. .1. l

This invention consists in passing the blast lof air, to be heated for farming the dame of a puddling-furnace, through a series of hollow rings placed one above another in a chimney, the produc-ts of combustion be neath rising through the rings, and the blast circulating in the rings one after another, said rings being connected by means of pipes for the transmission of the air-current from one to another, which pipes pass outside of the chimney, and are arranged to be removed and replaced at pleasure. v

It should be understood that we do not claim to be the original employers of rings for this purpose, being well aware that theiruse, in analogous manners, is old,

In the drawings, A represents a chimney of ordinary construction, through a suitable orifice, b, in the foun dation of which, passes a pipe, B, of a size proportioned to the quantity of the blast which its 'function -is to convey'. Said pipe passes vertically upward through the chimney. l

At a proper point, near the bottom of the chimney, is laid inthe masonry a square plate, c, with a circular aperture through it, as shown in ig. 2, on which plate rest lugs e, two or more, said .lugs projecting from a ring, c, of a diameter, from outside to outside, some inches loss than that'of the aforesaid apertiu'e in the i plate, c, within which aperture is placed the ring. Simi ilar plates, c, are placed at convenient distances, one

above another, in the chimney,'on' which rest similar i pose specified.

rings C, as many as may be desired.

The pipe B passes upward, conveying the blast through the rings C, and, when it haspassed the topmost one, it makes a sharp turn to the horizontal, and, passing out through the wall of the chimney, runs straight then inward, through the wall of the chimney again, and into the upper ring C, discharging its current, which, making the circuit of the ring, nds egress through the pipe D, which conducts it to the next lower ring, and so on until, on its exit from the lower ring, it is ready for the furnace.

The pipes D D D", 85e., which connect the rings, are each formed in three sections, the upper and lower of which project directly from the rings, through the wall of the chimney, and the middle one of which connects the said upper and lower sections. The points of connection, as shown in iig. 1, are all on the outside of the chimney. The middle sections` being the ones most liable to fracture, it is obvious that a damage to one ofthem may be repaired by replacing it, without stopping the furnace t0 cool the blast, or in any way damaging the chimney.

It will be seen that each ring rests upon its own foundation, and is entirely disconnected from the others. In* the'` chimneys in common use, in which rings are employed, the weight of all above rest upon the lower, andherein we claim an improvement.

Any ring that requires removal from any cause, may be taken out without damage to the chimney.

The effects of expansion and contraction are .conined to each ring and its pipes, and thus prevented `frm extending to the others, while the middle sections of the connecting-pipes, being outside of the chimney, sufferno damage from re, of ruinin the methods now in use. Another good eicct, resulting from placing the pipes so much on the outside, is, that the flame `and currents which heat the rings have a freeraccess to them. We also believe that our improvements conduce to the durability of the oven.

Having thus described our invention,

What we claim as new, and desire to secure by Let-v ters Patent, is

1. The rings C, provided with the lugs e, in combination with the foundation-plates c, as and for the purpose described.

2. The rings C, in combination with the pipes D, made in three or more sections, and having their middle portions outside the chimney, as and for the purl?. HOOP, Jn. R. HOOP. Witnesses:

JnofD. BROWN,

Romance C. FoRsY'rn.

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